Buoyancy device for unmanned aerial vehicle

Abstract

The invention discloses a buoyancy device for an unmanned aerial vehicle. The buoyancy device comprises a middle frame container, a small air bag, a citric acid powder storage structure (spaces on two sides in the middle frame container), a buoyancy air bag, a return spring and a water-soluble block, the small air bag is located in the middle-frame container and filled with soda water, the two sides of the middle-frame container are filled with citric acid powder, the buoyancy air bag is connected with the right side of the middle-frame container, and air outlets are formed in the right side wall; and the return spring is arranged at the head of the left side of the middle frame container and is clamped with the lower water-soluble block. When the unmanned aerial vehicle falls into water, the water-soluble block is soaked and dissolved, the pressure of the return spring is released to press and break the small air bag, soda water and citric acid powder are mixed to generate gas, the gas enters the buoyancy air bag through the air outlet to expand the buoyancy air bag, and the unmanned aerial vehicle floats in water. The buoyancy device and the unmanned aerial vehicle are designed in a split mode and can be replaced freely. A light high-strength material is adopted, so that the weight is light; the system does not depend on electronic equipment, is simple in working principle and high in stability, and can quickly respond to float the unmanned aerial vehicle, reduce loss and protect data.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle (UAV) auxiliary equipment, and particularly relates to a buoyancy device for a UAV. Background Art

[0002] With the rapid development of UAV technology, UAVs have been widely used in many fields such as aerial photography, surveying and mapping, agriculture, and logistics. However, there is a risk of falling during UAV flight, especially when flying over water or in areas close to water. Once the UAV falls into the water, it will face the risk of water ingress and damage, which will not only lead to the scrapping of the UAV itself, but also cause the loss of important information such as flight data and surveying and mapping data taken by the camera, bringing huge economic losses and data losses to users.

[0003] Although there are some protective measures against UAV falling into water in the current market, most of them rely on electronic devices to trigger the buoyancy device, which have problems such as complex structure, poor stability, and large weight, increasing the ineffective load of the UAV and affecting the flight performance of the UAV.

[0004] Therefore, it is of great practical significance to develop a UAV buoyancy device with a simple structure, high stability, light weight, and rapid response. Summary of the Invention

[0005] The purpose of the present invention is to provide a buoyancy device for a UAV, which can quickly generate buoyancy when the UAV falls into water, float the UAV, reduce the loss of the UAV, protect the flight data and surveying and mapping data taken by the camera, and at the same time has the advantages of simple working principle, high stability, light weight, and being designed separately from the UAV for easy replacement.

[0006] To achieve the above purpose, the present invention is realized through the following technical solutions:

[0007] A buoyancy device for a UAV includes a middle frame container, a small airbag, a citric acid powder storage cavity, a floating airbag, a return spring, and a water-soluble block;

[0008] The small airbag is arranged inside the middle frame container, and the small airbag is filled with soda water;

[0009] The citric acid powder storage cavity is the internal space of the middle frame container, and the spaces on both sides of the small airbag inside the middle frame container are filled with citric acid powder;

[0010] The floating airbag is connected to the right side of the middle frame container, and an air outlet hole communicating with the floating airbag is provided on the right side wall of the middle frame container;

[0011] The return spring is installed at the left head of the middle frame container, and the water-soluble block is arranged below the return spring. In the initial state, the return spring is in an open state and is engaged and fixed with the water-soluble block.

[0012] Furthermore, the buoyancy device is designed with a split structure from the drone, and can be assembled and disassembled with different drones, realizing the random replacement of the buoyancy device between different drones.

[0013] Furthermore, the middle frame container is made of a lightweight and high-strength carbon fiber composite material.

[0014] Furthermore, the small airbag is made of a polymer material with flexibility and corrosion resistance, including polyvinyl chloride or polyethylene.

[0015] Furthermore, the floating airbag is made of a flexible nylon-coated fabric material that can be folded and easily inflated.

[0016] Furthermore, the water-soluble block is made of a water-soluble polymer material with polyvinyl alcohol as the main component.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] Quick response floating: Once the aircraft drops into the water on the water surface, the buoyancy device can quickly respond and make the drone float, effectively reducing the loss caused by the drone getting water in, while protecting the flight data and the shooting and mapping data, and avoiding the loss of important information.

[0019] Simple and stable working principle: The working principle of the present invention is based on a simple chemical reaction, does not rely on electronic devices, has a simple structure, greatly improves the stability and reliability of the device, and reduces the risk of the buoyancy device failing due to electronic device failures.

[0020] Light weight and easy to carry: The entire buoyancy device is light in weight and will not add too much ineffective load to the drone, which is beneficial to ensuring the flight performance and endurance of the drone.

[0021] Split structure is convenient for replacement: This product and the drone are designed with a split structure, and the drone can be replaced at will. When the drone is damaged, there is no need to scrap the buoyancy device together, reducing the use cost and avoiding resource waste. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a buoyancy device for a drone according to the present invention. Detailed Embodiments

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0024] In the description of the embodiments of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0025] In addition, if terms such as "horizontal", "vertical", "hanging" are used, it does not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0026] In the description of the embodiments of the present invention, "a plurality of" represents at least two.

[0027] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] Embodiment:

[0029] As Figure 1 shown, a buoyancy device for a drone according to the present invention includes a middle frame container 1, a small airbag 2, a citric acid powder storage cavity 3, a buoyancy airbag 4, a return spring 5, and a water-soluble block 6;

[0030] The small airbag 2 is arranged inside the middle frame container 1, and the small airbag 2 is filled with soda water 21;

[0031] The citric acid powder storage cavity 3 is the internal space of the middle frame container 1, and the spaces on both sides of the small airbag 2 inside the middle frame container 1 are filled with citric acid powder 31;

[0032] The buoyancy airbag 4 is connected to the right side of the middle frame container 1, and the right side wall of the middle frame container 1 is provided with an air outlet 7 connected to the buoyancy airbag 4;

[0033] The return spring 5 is installed at the left head of the middle frame container 1, and the water-soluble block 6 is arranged below the return spring 5. In the initial state, the return spring is in an open state and is engaged and fixed with the water-soluble block; when the water-soluble block is soaked and dissolved by water, the pressure of the return spring is released and pressed downward, thereby breaking the small airbag, so that the soda water in the small airbag is mixed with the citric acid powder in the middle frame container to generate a chemical reaction to produce gas, and the generated gas enters and fills the buoyancy airbag through the air outlet, realizing the floating of the drone in water.

[0034] Furthermore, the buoyancy device and the drone adopt a split structure design, which can be conveniently assembled and disassembled with different drones, realizing the random replacement of the buoyancy device between different drones.

[0035] Furthermore, the middle frame container 1 is made of a lightweight and high-strength carbon fiber composite material. The carbon fiber composite material has the characteristics of low density and light weight. While ensuring the overall structural stability of the device, it can minimize the impact on the flight performance of the drone and will not reduce the endurance or flight speed of the drone due to excessive weight increase; in addition, this material also has high strength and high stiffness, and can withstand various external forces that the buoyancy device may receive during assembly and use, such as the impact force of the return spring and the pressure when the buoyancy airbag expands, ensuring that the buoyancy device can operate reliably under various working conditions.

[0036] Furthermore, the small airbag 2 is made of a polymer material with certain flexibility and corrosion resistance, including polyvinyl chloride (PVC) or polyethylene (PE). These materials not only have good flexibility, can maintain the relative stability of the shape during the storage of soda water and the process of being broken by the return spring, avoid affecting the normal progress of the chemical reaction due to excessive deformation or improper rupture method, but also have excellent corrosion resistance, can effectively prevent the erosion of soda water on the small airbag material, ensure that the small airbag can play a normal role throughout the service life, and avoid chemical reactions with soda water to affect the performance of the buoyancy device.

[0037] Furthermore, the buoyancy airbag 4 is made of a flexible nylon-coated fabric material that can be folded and easily inflated. The nylon-coated fabric material has excellent flexibility and foldability, and can be easily folded and stored when not in use, greatly reducing the occupied space of the buoyancy device on the drone and facilitating the carrying and transportation of the drone. At the same time, the surface of this material is coated with a special coating, which has good airtightness, can quickly expand and maintain sufficient buoyancy after being filled with gas, ensuring that the drone can float stably in water. In addition, the nylon material itself also has certain wear resistance and tear resistance, can adapt to the use requirements of the drone in different environments, and extends the service life of the buoyancy airbag.

[0038] Furthermore, the water-soluble block 6 is made of a water-soluble polymer material with polyvinyl alcohol (PVA) as the main component. Polyvinyl alcohol has good water solubility and can quickly dissolve in water, ensuring that after the drone falls into the water, the water-soluble block can completely dissolve in a short time, thereby triggering the action of the return spring in time and enabling the buoyancy device to quickly play its role. At the same time, this material has certain strength and stability in the dry state, can reliably hold the return spring, and ensures the safety of the buoyancy device during normal transportation and storage. In addition, the polyvinyl alcohol material also has the advantages of being non-toxic and pollution-free, meeting environmental protection requirements and not causing harm to the environment.

[0039] Usage process:

[0040] Install the assembled buoyancy device on the drone. When the drone falls into the water during flight, the water will gradually soak the water-soluble block. As the water-soluble block dissolves, the pressure on the return spring is released, and the return spring presses down and breaks the small airbag. The soda water in the small airbag quickly mixes with the citric acid powder in the middle frame container, and a chemical reaction occurs to generate a large amount of gas. The gas enters the buoyancy airbag through the air outlet, causing the buoyancy airbag to quickly expand, providing buoyancy for the drone and enabling the drone to float on the water surface.

[0041] When the drone is damaged for various reasons, simply disassemble the buoyancy device from the damaged drone and install it on a new drone to continue using it, without the need to purchase a new buoyancy device, reducing the usage cost.

[0042] The above describes the present invention and its implementation manners. This description is not restrictive, and what is shown in the drawings is only one of the implementation manners of the present invention. The actual structure is not limited to this. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A buoyancy device for a drone, characterized in that, It includes a middle frame container, a small airbag, a citric acid powder storage cavity, a buoyancy airbag, a return spring, and a water-soluble block; The small airbag is arranged inside the middle frame container, and the small airbag is filled with soda water; The citric acid powder storage cavity is the internal space of the middle frame container, and the spaces on both sides of the small airbag inside the middle frame container are filled with citric acid powder; The buoyancy airbag is connected to the right side of the middle frame container, and the right side wall of the middle frame container is provided with an air outlet communicating with the buoyancy airbag; The return spring is installed at the left head of the middle frame container, and the water-soluble block is arranged below the return spring. In the initial state, the return spring is in an open state and is engaged and fixed with the water-soluble block.

2. The buoyancy device for a drone according to claim 1, wherein: The buoyancy device is designed with a split structure from the drone, and can be assembled and disassembled with different drones to achieve the random replacement of the buoyancy device between different drones.

3. The buoyancy device for a drone according to claim 1, characterized in that: The middle frame container is made of a lightweight and high-strength carbon fiber composite material.

4. A buoyancy device for a drone according to claim 1, characterized in that: The small airbag is made of a polymer material with flexibility and corrosion resistance, including polyvinyl chloride or polyethylene.

5. The buoyancy device for a drone according to claim 1, wherein: The buoyancy airbag is made of a flexible nylon-coated fabric material that can be folded and easily inflated.

6. The buoyancy device for a drone according to claim 1, wherein: The water-soluble block is made of a water-soluble polymer material with polyvinyl alcohol as the main component.

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